The prophet speaks of two separate periods; one of 49 years and one of 434 years. The calculations made by the missionaries have no basis in reality outside of the missionary desire to shoehorn Jesus into the time frame of this prophecy.

306. Daniel 9:26a “cut off”

This is referring to the last high priest that served in the Second Temple.

307. Daniel 9:26b “die for the sins of the world”

The prophet gives no reason for the purpose of the “cutting off”.

308. Daniel 9:26c “killed before the destruction of the Temple”

The prophet actually says that this “cutting off” will be concurrent with the destruction of the temple; not “before”.